ffmpeg | branch: release/2.8 | Michael Niedermayer <mich...@niedermayer.cc> | Mon Jun 5 22:23:15 2017 +0200| [fb95f1d9d6d7b06060b96c2fc0eacdd2dbe4626d] | committer: Michael Niedermayer
avcodec/mjpegdec: Check that reference frame matches the current frame Fixes: out of array read Fixes: 2097/clusterfuzz-testcase-minimized-5036861833609216 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> (cherry picked from commit 4705edbbb96e193f51c72248f508ae5693702a48) Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=fb95f1d9d6d7b06060b96c2fc0eacdd2dbe4626d --- libavcodec/mjpegdec.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/libavcodec/mjpegdec.c b/libavcodec/mjpegdec.c index c16baa2823..b51ebf450c 100644 --- a/libavcodec/mjpegdec.c +++ b/libavcodec/mjpegdec.c @@ -1469,6 +1469,15 @@ int ff_mjpeg_decode_sos(MJpegDecodeContext *s, const uint8_t *mb_bitmask, return -1; } + if (reference) { + if (reference->width != s->picture_ptr->width || + reference->height != s->picture_ptr->height || + reference->format != s->picture_ptr->format) { + av_log(s->avctx, AV_LOG_ERROR, "Reference mismatching\n"); + return AVERROR_INVALIDDATA; + } + } + av_assert0(s->picture_ptr->data[0]); /* XXX: verify len field validity */ len = get_bits(&s->gb, 16); _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog
